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Finding the Fourth Proportional to 699,906.04, 966,028.35 and 428,200.45

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Solution

The fourth proportional to 699,906.04, 966,028.35 and 428,200.45 is: 591,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,906.04 : 966,028.35 = 428,200.45 : x
  2. Step 2: Convert to fraction form
    699,906.04/966,028.35 = 428,200.45/x
  3. Step 3: Cross multiply
    699,906.04x = 966,028.35 × 428,200.45
  4. Step 4: Simplify right side
    699,906.04x = 413,653,774,182.76
  5. Step 5: Solve for x
    x = 413,653,774,182.76/699,906.04
  6. Step 6: Final answer
    x = 591,013.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.